Pump for vacuum-cleaners.



c. ENDORF, In. PUMP FOR VACUUM CLEANERS. APPLICATION FILED APR. 22; 1915. 1L Patented July 23, 1918.

2 SHEETS-SHEET 1.

C. ENDORF, JR. PUMP FOR VACUUM CLEANERS.

APPLICATION FILED APR. 22, I915. mmm w Patented July 23,1918.

, 2 SHEETSSHEET 2.

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cnannns JENDORIF, In, or cnIcaeo, IInInoIs,

coivrranv, or cnxcaeo, ILLINOIS, a CORPORATION or InnInoIs.

ASSIGNOR T0 LTNDSTROM, SMITH PUMP FOR. VACUUM-ELEANE.

Patented July 23, 1e18,

a lication tiled April 22, 1am. Serial no. aaoet.

in that class of a pump for vacuum cleaners wherein the motor and fan exhausting means are associated with the nozzle and suitably mounted upon rollers or wheels for movement over the surface to be, cleaned.

In most vacuum cleaners, if it is necessary or desirable to use a jet of air for-cleaning", as for instance in blowing dust from between the coils of a radiator, it is necessary to detach the dust bag and attach a hose lead in place thereof provided with a suitable nozz le for directing the jetof air where de-' sired. This is exceedingly inconvenient, and it is the purpose of this invention to provide a caslng equipped with valves and auxiliary hose lead connections whereby a pressure jet of air or a suction draft may be obtained other than through the usualinlet and outlet passages of the device to which the cleaning brush and dust bag are connected so as not to necessitate detachment of these parts. By this construction-not only is an improved arrangement of air passages provided in the casing to admit attachment of auxiliary devices thereto, but an improved mounting of the brush, as well as handle, is obtained, with means also for adjusting the sweeping nozzle difi'erent heights from the floor as may be necessitated by conditions.

It is an object therefore of this invention to construct an improved type of casing for a pump for vacuum cleaners afiording a compartment for amotor and a fan, with a plurality of inlet and outlet valved passages associated therewith, whereby the draft may be directed through the casing in a number of difi'erent paths to permit use of auxiliary devices when desired.

It is also an object of this invention to construct an improved type-of casing for a pump for a vacuum cleaner provided with -illustrated in the attached thereon by means 0 a plurality of valved inlet and outlet passages, and with mechanism for adj usting the with an improved type of sweeping brush together with an improved handle connection.

It is furthermore an important object of this inventlon to construct an integral casing having a plurality of inlet and outlet passages with rotatable valve elements for interconnecting the same to direct a draft through a sweeper brush into a dust bag or outwardly through an auxiliary nozzle for use of air under pressure, or to utilize an auxiliary draft nozzle with communication to the sweeping nozzle cut ed and the dust bag in communication with said auxiliary nozzle to receive the dust therefrom.

It is finally an object of this invention to greatly simplify and improve the construction of a pump for a vacuum sweeper by a new arrangement of passages therethrough with a novel mechanism supporting the casing on its rollers, as Well as a convenient handle supporting means for the device.

The invention (in a preferred form) is drawings and hereinafter more fully described.

Tn the drawings:

Figure lis a side elevation of a vacuum sweeper embodying the principles of my invention. 7

' Fig. 2 is an enlarged front face view thereof with the handle broken away.

Fig. 3 is a bottom sweeper head or casing. v Fig. 4: is an enlarged side elevation partly in section, of the sweeper head or casing.

Fig. 5 'is a fragmentary taken on line 5-5 of Fig. 4.

Fig. 6 is a fragmentary taken on-line 66 of Fig. l.

Fig. 7 is a detail section 77 of Fig. 4.

Fig. 8 is a detail section 88 of F ig. 7. 1

As shown in the drawings:

The sweeper head consists of an integral casing 1, with a dome sha ed housing 2,

fscrews within drive a suction plan View of the detail section taken on line taken on line which a motor is mounted to fan 3, rotating in a mentt, within the casing. The sweeper circular, fan compartdetail section lllll head on its under side is provided with brackets 5, in which rollers or caster wheels 6, are journaled, and near the rear end of said casing on the under surface thereof, a bracket 7, is pivotally connected by means of a in 8, and is provided with a roller or whee 9. A screw bolt 10, having a knurled head, is threaded into an extension on the under side of the casing, and is engaged to said bracket 7 to raise or lower the roller 9, with respect to the sweeper head.

' Formed integrally along the front end of the sweeper head or casing 1, is a nozzle 11, thepassa e therewithin leading into the sweeper hea casing, being denoted by the reference numeral 12. The passageway 12, communicates through an aperture in a horizontal partition wall 13,within the easing 1, with the fan compartment 4, and rotatably mounted in a circular aperture in the lower wall'of said passage 12, and in said aperture in the partition 13, is a cylindrical valve-element 15, having a curved wallwith a slot or opening 16, therein, the

valve being rotatable between'abutments 17, provided on the inner side walls of the passageway 12, as clearly shown in Fig 6. A

, retaining member 18, is secured on the under surface of the sweeper head and engages beneath the rotatable valve 15, to maintain the same associated with the casing, and an actuating handle 19, is secured on the under surface of said valve for conveniently rotating the same. As clearly shown in Fig. 3, stops 20, are provided on the under side of said sweeper head casing to limit the throw of the handle 19, of the rotatable valve 15.

Another rotatable valve, consisting merely of a metal ring 21, mounted within the fan compartment 4, as clearly shown in Fig. 5, is provided with an opening 22, there,- through, and a small actuating knob 23, is

secured on said ring and projects outwardly through a slot 24, provided in the casing 1, for convenient actuation of sald valve.

' Communicating with said fan chamber 4,

at the rear thereof is an eduetion passage 25, and inserted thereinto is a short pipe section 26, retained therein by a set screw 27, with a dust bag 28, connected on said pipe section. Formed on the bottom of the cas ing and directed laterally is an exhaust nozzle connection 29, which is adapted to communicate through the rotatable v valve 15-16, with the fan chamber 4, and 1s normally out of communication therewith with the valve 15-46, in the position shown in Fig. 6. Also formed integral with said casing 1, and projecting rearwardly on one side from the walls of the fan chamber, is a pressure nozzle connection 30, adapted to communicate with said fan chamber 4, as clearly shown in Fig. 5, dependent upon the adjustment of the annular valve 21.

A long handle 31, with strips of metal 32, attached on the lower end thereof, affording a yoked attaching bracket for the handle, is pivotall connected on lugs 33, formed on each si e of the casing, and disposed directly over said lugs are stops 34, to limit the swinging movement of said handle to the upright position shown in Fig. 1. As shown in Fig. 5, the metal yoke arms 32, of the handle are indented, as indicated by the reference numeral 35, and formed adjacent the stops 34, are detents 36, adapted to fit into the indented portions of said yoke arms when the same are sprung thereover to maintain the handle fixed in the upright position shown in Fig. 1.

A coiled spring 37 is attached upon said handle 31, and to the upper end of the dust bag 28, to support the same, and a flexible cord or lead 38, provided with a switch 39, is led to the motor within the housing 2, through suitable guides 40, provided on said handle. Bracket hooks 41, are also provided on said handle to permit the extension cord or wire 38, to be wound thereabout when the device is not in use.

Mounted within the nozzle 11, at each end thereof, are depending slotted brackets 42, the slot therein, as clearly shown in Fig. 8, opening outwardly through the side of the bracket at the upper end thereof, to permit insertion thereinto of metal tongues 43, which are connected to a long brush 44, insertible within the nozzle, so that the brush is not only detachable from within the nozzle, but is capable of movement therein to a certain extent, Without detachment therefrom. Accordingly light leaf springs 45, are attached within said nozzle, and disposed to bear upon the upper surface of the brush to normally impel the same downwardly within said nozzle into contact with the surface to be cleaned.

The operation is as follows:

For normal operation of the device, as for instance over a rug or carpet, the rotatable annular valve element 21, is moved into the position shown in Fig. 5 by throwing the small handle 23, to one end of the slot 24, thus establishing communication between the. eduetion passage 25, to the dust bag, and the fan chamber. The other rotatable valve 15-16, is rotated into the position shown in Fig. 6, so that communication between the passage 12, leading from the sweeping nozzle 11, is established through said valve and aperture in the partition wall 13, with the fan chamber. If, however, it is desired to use a pressure jet or blast of air, as for instance in blowing dust from corners difficult of access, the annular valve element 21, is thrown into an opposite extreme position from that shown in Fig. 5, so that the opening 22, in said valve element will register with the outlet lll til

evant-a nozzle 80, and communication between the fan chamber and the eduction passage 25, will be closed. its a consequence the air drawn into the casing by rotation of the fan will be caused to flow outwardly under pressure throu h said outlet passage .30, and any auxiliary ose connection and nozzle p vided for the purpose may be connecte therein.

If it is desired to use a suction edect for cleaning surfaces "ivhich are not conveniently accessible by means of the main suction nozzle 11, the valve element l5, is rotated one hundred eighty degrees by means of its actuating handle 19, so that communication between the inlet passage 12, and

the fan chamber through said valve element is closed, and communication is established between the auxiliary inlet nozzle 29, and said fan chamber through the slot 16, in said valve element. The annular valve element 21, for this method of operation, is swung nozzle 11, may be adjusted to diderent into the position shown in Fig. 5, and an auxiliary hose line and nozzle is connected into the passage 29 and the dust drawn inwardly therethrough is passedinto the dust bag 28.

Whenthe device is used in the usual and ordinary manner for cleaning rugs, carpets or other surfaces and rolled about and guided by the handle 31, the brush 4L4, bears vieldingly upon the surface being cleaned,

oosening and agitating the lint and S1115.

face dirt, permitting the same to be drawn through the nozzle by the draft of air. The

heights from the surface to be cleaned, as

a for instance in cleaning certain kinds of rugs having a relatively long nap. The screw bolt 10, isrotated to move the roller 9. toward or away from the casing,.thuselerating or lowering the rear end of the easing.- Inasmuch as the forward end of the casing pivots about the axes rollers (i, the nozzle ll, will be correspond ingly moved toward or away from thesurface to be cleaned.- lh'e resilient yoke attaching arms 32, by which the handle is pivotally connectedto the casing, co-acting of the forward lit l; in a pump for a vacuum cleaner of the class described the combination" with a casing, of a fan chamber formed therein, a plurality of eduction passages communicating with said fan chamber, an annular horizontally rotatable valve element within the till fan chamber adapted to establish communication between either one of said eduction passages and said chamber, and a cylindrical valve 1n an inlet )assage communicating lid with said fan eham or adapted to be re- I moved to permit cleaning of the. interior of said casing.

2'. ln a device of the class described, the combination of a casing having an opening in the bottom thereof, a fan chamber therein, a plurality of eduction passages communicating therewith, a ring valve in said fan chamber controlling the flow from the same into said eduction passages, said valve actuatable from the exterior of the casing, a plurality of inlet passages formed in said casing, and a valve closed at one end and 0 on at the other end rotatably and remova 1y engaged in said casing opening to close the same and adapted to control thecommu nication of said inlet passages with said fan chambenln testimony whereof l[ have hereunto subscribed my name in the presence of two subscribing witnesses. 

